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REPAIR GUIDELINE

Version: 1

Issue Date: 2015/03/05

Hedge Trimmer_HT2400E

Table of Contents

2

NO. Contents Page

1 Troubleshooting 3

2 Tool list 4

3 Replace the Front Handle Set 5-12

4 Replace the Blade Assembly 13-26

5 Replace the PCB Assembly 27-45

6 Replace the Motor and Gear Box Assembly 46-49

7 Replace the Gears in Gear Box 50-62

Troubleshooting

Problem Possible Cause Fault Position Test & Solution

Fail to start

Main PCB or its wires are broken PCB Assembly Replace the PCB Assembly.

The blade is jammed when some

obstruction stuck in the edge of

the blade make the blade curved

or deformed.

Blade Set Clear the obstructions or replace the

Blade Set

Motor is jammed due to foreign

objects stuck in the motor. Motor Replace the Motor And Gear Assembly.

Gears are jammed due to broken

tooth. Gear Set Replace the failure gears.

Malfunction of switch levers Switch Levers Replace the Switch Lever.

Soft Start Failure Main PCB is broken PCB Assembly Replace the PCB Assembly.

Excessive vibration

Unbalance of the motor Motor Replace the Motor And Gear Assembly.

Over-worn of the Eccentric Block Eccentric Block Replace the Eccentric Block.

The speed is decreased or

less powerful compared

with normal use.

Motor is broken Motor Replace the Motor And Gear Assembly.

The switch lever doesn’t

return to the original

position.

Dust adhered to the switch. Switch Lever Clear the dust

3

Tool List For Repair

4

NO. Tool List SPEC Remark

1 Magnetic bits

2 Hexagon Spline Screwdriver To remove the hexagon spline screw

3 Screwdriver

4 Torque Wrench Rated torque should exceed

12 Nm To tighten the blade bolt

5 Hex wrench M6

6 Electric Soldering Iron To solder or separate the motor with

the PCB

7 Solder sucker

8 Heat shrinkable sleeves

9Scissors To remove the shrinkable sleeve

10 Grease To lubricate the Blade

5

Part 1: Replace the Front Handle Set

Replace the Front Handle Set

1. Loosen and remove the Hexagon spline screw in the hand guard with a hexagon spline

screwdriver and remove the hand guard from the housing.

2. Replace the hand guard if it is broken.

6

Hand Guard

Front Handle

Hexagon spline screw

Description Part Number SPEC

Hexagon Spline Screw 5620424000 ---

Hand guard 3124203000 ---

Replace the Front Handle Set

3. Loosen and remove the 6 screws in the front handle.

4. Loosen the 4 screws at both sides of the front handle set and remove the screws.

5. Separate the front half handle from the rear half handle.

7

Description Part Number SPEC

Tapping Screw 5610032000 ST4X16

Front half handle

Rear half handle

Replace the Front Handle Set

6. Take out the internal wire and switch from the rear half handle; remove the rear half handle

from the housing.

7. Replace the front handle set if they are broken.

8

Description Part Number

Front handle set 2823733000

Front Switch Lever 3124356000

Front switch lever Front handle set

Switch

Replace the Front Handle Set

8. To replace the switch:

(a) Remove the heat-shrinkable sleeves with a scissor, then remove the wires from the

trigger with an electric soldering iron.

(b) Replace with a new switch.

(c) Place new heat-shrinkable sleeves through the wires, then solder the wires to the

switch following the below figure.

(d) Move the heat-shrinkable sleeves to cover the switch feet and use a hot air gun to

shrink the sleeves.

9

Description Part Number

Front Trigger Switch 4870381000

Red

black

blue

Replace the Front Handle Set

9. Mount the rear half handle onto the housing.

10. Position the switch in the rear half handle, make sure the switch trigger downwards.

10

Switch trigger Switch

Rear half housing